Type-writing machine.



J. H. BARR.

TYPE WRITING MACHINE.

uruouxon rmm MAR. 16, 1905.

Patented De0.21, 1909.

III II [NVEN TOR.

m H 0 5 man i 60% 11x m n J. WN 5w m G r:

WITNESSES- ATTORN Y.

rounds the segment 1.

UNrr snares JOHN H. BARR, OF sraiicnsn, NEW YOEK, ASSIGNQR THE SMITH FREMIER TYPE- WRITER COMPANY, OF SYRACUSE, NEVI YORK, A GORPOLRATIQN 013 NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent. Patented Dec. 211, jtfi flg.

Application filed March 16, 1905. Serial No. 250/2424.

To all whom it may concern:

Be it known that I, JOHN H. BARR, citizen of the United States, and resident of Syracuse, in the county of Onondaga and State of'New York, have invented certain new and useful Improvements in Type- WVritin Machines, of which the following is a speci cation.-

My invention relates to typewriting inachines and it has for its object to provide a ball bearing pivot for a type bar.

My invention consists in certain features of construction and combinations and arrangement-s of parts which will be fully set forth herein and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is an edge view and Fig. 2 a face view of a type bar. ig. 3 is a View of a type bar seg ment having two type bars mounted thereon, said type bars being shown in section. Fig. 4 is a sectional view on the line of Fig. 3. Figs. 5, 6 and 7 are an outside face view,

- a transversesectional view and an inside face View respectively, of a ring used in my construction. Fig, 8 is a view of a tool used for adjusting the ball hearing.

I have shown the type bars mountedon a segment 1 which consists of a curved rod of circular cross section having cut in its surface a series of peripheral grooves 2 which constitute ball races for anti-friction balls 3. The type bar ihas at its free end an enlargement in which is a hole 5 for the reception of a type block. At its pivotal end the type bar is enlarged to form an eye which sur- Said pivotal end of the type bar consists essentially of an annu- -lar strap 6 which is integral with the type bar. Said annular strap is out through at one point at an angle to the shank of the type bar and the ends thereof are formed into outstanding lugs 7 and 8, and a headed screw 9 passes through one of said lugs and is threaded into the other for the purpose of tightening the strap. The eye formed by the strap 6 is internally threaded for the reception of two rings 10, each of which is threaded on its'periphery so as to be screwed into the eye in the type bar, and the interior surface of each of said rings is beveled or cone shaped, as shown and both rings being wholly Within the eye of the type bar.

-\s shown in Fig. 3, the two rings 10 in 6170.1). type bar have their beveled or conical faces turned toward each two rings together form which constitutes a bail race. The halls run in the ball race thus formed and in the grooves 2 in the segment 1, so that each type bar is connected with the segment i by a ball bearing. Obviously this ball bearing may be u'sted by loosening or tightening one or the other of the rings 10. To this end each of said rings has formed in its outer fiat face a series of depressions 11 for the reception of a-suitable tool. A tool suitable for the purpose is shown in Figs. 3 and 8 and consists of a strip or bar of sheet metal 12 having projecting from one end thereof a pin 13 which is adapted to be inserted in one of the depressions 11 as shown in Fig. 3. The curvature of the segment 1 results in separating two adjacent type bars farther apart on their lower edges than on their upper edges,as shown in 3. This leaves suiiicient room between the two type bars for the insertion of the adjusting tool.

When any of the ball bearings has been adjusted by turning the rings 10, these rings may be secured against accidental turning by tightening the screw 9, thus tightening the strap 0 about the rings 10. I prefer to construct the parts as shown so that when the bearing is assembled the fiat outer faces of the rings 10 are approximately flush with the corresponding faces of the strap 6 so that the entire bearing of the type bar is no wider than said strap.

Each of the type bars is connected with some suitable operating mechanism. In the present case [have shown projecting from the strap 0 an ear 1:: having an opening therein for an operating link which may be connected with key lever mechanism in any suitable manner.

By screwing both rings to corresponding extents in the same direction, the type bar other so that these an interior groove may be shifted bodily in a lateral direction relative to the fixed ball bearing.

Various modifications may beinade in the details of construction and arrangements without departing from my invention.

What I claim as newand desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a type bar support having a race way formed therein, a type bar having an eye comprising an integral peripheral strap, two rings threaded into said eye and together ,into the other whereby sai to ining an adjustable race-Way, means for tightening said strap about said rings, and anti-friction rollers running in said race ways. i I

2. .In a typewriting machine, the combination ofa type bar support having a race-way formed therein, a type bar having an eye surrounding said race-way, two rings threaded into said eye and together forming a race-way, and anti-friction rollers run- D1110 in. said cooperating race-ways, said eye in tire type bar comprising a strap which at a point at an angle with the shank of the type bar is cut across, and a screw passing through one end of said stra and threaded strap may be tightened about said rings.

3. In a typewriting machine, the combination of a segmental type bar sup ort having a plurality of race-ways forme therein, a plurality of type bars each having an eye encircling one of: said race-ways, two rings threaded into each of'said eyes and both wholly within said eye, said rings together i forming a race-way Which'cooperates with a race-way in the type bar support, means for adjusting said rings with relation to each other, and means for clamping said rings in adjusted position.

4. In a typewriting machine, the combination of a type bar support having a race-way formed therein, a type bar having an internally threaded eye comprising a strap which at one point is cut through, two rings threaded into said eye andtogether forming a raceway, said rings being capable of being turned to adjust them toward and away from each other, anti-friction rollers running in said cooperating raceways, said strap having outstanding lugs 7 and 8, and a screw passing through said lugs whereby said strap may be tightened about said rings to retain them in adjusted position.

5. The combination of a type bar segment having a series of race-ways formed in its periphery, a series of type'bars, each having an integral interiorly threaded eye encirclin said segment, two rings screwed into each 0 said eyes and both wholly within the eye, said two rings together constituting a race-way which cooperates with one of said race-ways in the segment, and anti-friction rollers running in said cooperating raceways.

having a series of race-ways formed in its perlphery, a series of type bars, each havan interiorly threade (i. The combination of a type bar segment 7 ing an integral interiorlythreaded eyeQe n: V circling said segment, two rings screwed into each 01 said eyes and both wholly within the" eye, said two rings together constituting a. I

race-way, which cooperates with one of said race-ways 1n the segment, anti-friction rollers running in said cooperating race-ways,

and means for tightening the eye of each of said type bars about said rings.

7. A fixed support having a peripheral ball race therein, a typebar aving an interal eye which surrounds said peripheral caring and is divided transversely, internal threads in said eye, externally threaded rings both wholly within the eye and that are adjustable toward and away from each other in said eye and forming a ball race between them, a series of balls contained within the races formed by said rings and said peripheral bearing, and means for drawing the free ends of the divided eye together to tighten the eye on said rings and hold them in the adjusted position in the eye.

8. In a ty ewriting machine, the combination with a fixed support having a ball bearing groove, of a type bar having an interiorly screw-threads eye, two similar-ring like cones, exteriorly threaded and fitted within said eye, and having means for adjusting them laterally for shifting the type bar laterally relatively to the fixed ball bearing groove, and means for tightening said eye about said rings.

9. In a typewriting machine, the combina; tion of a type bar support having a-"series of non-para lel ball races cut peripherally therein, a series of type bars set close together along said sup ort and each having eye encircling said support, a pair of thin coned rings threaded into the eye of each type bar and together forming a companion ball race with one of the non-parallel ball races in the support,

and anti-friction balls in said ball races,

daga and State of New York, this'l4th day of March A. D. 1905,

JOHN H. BARR. Witnesses i E; E. Cour,

A. L. lliINh-AN; 

